Internal-combustion engine



Dec. 2, 1930. H. ELLERBUSCH 1,783,499

INTERNAL COMBUSTION ENGINE Filed Dec. 27. 1929 In vemon: M4

Patented Dec. 2 1930 UNITED STATES HERMAN N EIILERBUSCH, F DOBTMUND-EVING, GERMANY INTERNAL-COMBUSTION ENGINE Application filed December 27, 1929, Serial No. 416,919, and in Germany December 27, 1928.

The present invention relates to means for preventing the deterioration of the lubricating oil in internal combustion engines.

In internal combustion engines running 5 on liquid fuels a sharp dilution of the lubricating oil occurs due to the undesired introduction of liquid fuel if the boiling point of the latter exceeds the upper boiling range of the usual engine fuels, such as petrol or benzol. Even small additions of comparatively high-boiling fuels are sufiicient to reduce the viscosity of the lubricating oil to such an extent as to seriously impair the running of internal combustion engines.

In the internal ,combustion engine described in the patent application Ser. No.

87 ,7 96/1925 dilution of the lubricating oil is obviated by means of an insert which gasifies the fuel particles entering the cylinder chamber through the inlet valve innonevaporated condition and thus prevents them from spreading along the compression-chamber walls and from getting to the sliding surfaces of the piston.

The object of this invention is an improvement of this internal combustion engine in order to prevent the deterioration of the lubricating oil. For in certain engine types the insets described in patent application 'Ser. No. 87,796 grow very hot after a short running period and cause the fuel-air-mixture to ignite prematurely, resulting in heavy knocking of the engine followed by falling off in en ine power.

Furthermore, it is to be feared that by the continuous overheating of the surfaces the material might burn off, the engine thus being exposed to damage and materially reduced in its efficiency.

The present invention eliminates these defects by protecting the deflecting surfaces of the engine from being overheated by largely increasing the heat transfer from the surfaces to the cooling water. By suitably shaping the deflecting surfaces one can manage to prevent them from being too much heated and thus exclude the possibility of the fuel-air-mixture being prematurely ignited. u

The accompanying drawing schematically and cylinder barrel 0 so as to ensure very prompt heat dissipation from the plate to the cooling Water.

Moreover, in order to enlarge the surface located under the inlet valve and thus increase its vaporizing power, its opening is no longer centrally disposed, but laterally displaced. This arrangement secures the further advantage that fuel particles etc. which may not have been atomized or vaporized cannot drop straight upon the piston head, but fall on the deflecting plate where they are vaporized or burnt.

Having now particularly described and ascertained the nature of my said invention, and in what manner the same is to be performed, I declare that what I claim is:

1. An internal combustion engine in which, between cylinder and cylinder head, a deflecting surface is disposed the protruding plates of which promptly abstract the heat to the cooling water.

2. An internal combustion engine with a deflecting surface disposed between cylinder and cylinder head to abstract'the heat to the cooling water by means of protruding plates, the deflecting surface being provided with an opening for the passage of the gas mixture.

3. An internal combustion engine with a deflecting surface disposed between cylinder and cylinder head the protruding plates of which surface promptly abstract the heat to the cooling water and are provided for the passage of the gas-mixture with an opening laterally displaced towards the exhaust valve so that 9 the surface located under the inlet valve is correspondingly enlarged.

In testimony whereof I aflix my slgnature.

HERMANN ELLERBUSCH. 

